156-315.81.20 Threat Prevention and SandBlast Practice Question
Exhibit
fw ctl zdebug drop | grep 192.168.1.50 [DROP]: [THREAT_PREVENTION] Reason: Emulation block - File: invoice.pdf
Refer to the exhibit. An administrator is troubleshooting a file download issue. The CLI output confirms the file is blocked by Threat Emulation. What is the next logical step to investigate why this specific file was classified as malicious?
⚠ Common exam trap
Candidates frequently suggest checking CLI debug logs or packet captures. While these are useful for connectivity, they do not contain the specific sandbox detonation report required for classification analysis.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Examine the 'Threat Prevention' logs in the SmartConsole to view the Emulation report.
The CLI output confirms the block, but it lacks the forensic details found in the SmartConsole. To understand the classification, the administrator must examine the Threat Prevention logs in the Logs & Monitor tab. These logs provide the detailed emulation report, including the specific indicators of compromise (IoC) and the behavior patterns triggered during the sandbox analysis, which is essential for differentiating between true positives and potential false positives.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Run 'cpview' on the gateway to check the Threat Emulation queue depth.
Why it's wrong here
Cpview provides real-time performance statistics and system health monitoring, including queue depths. However, it does not provide historical log data or the specific emulation analysis report required to identify why a file was deemed malicious. It is a diagnostic tool for performance, not for security incident analysis.
- ✓
Examine the 'Threat Prevention' logs in the SmartConsole to view the Emulation report.
Why this is correct
The Threat Prevention logs contain the comprehensive Emulation report. This report details the actions the file attempted in the sandbox, such as registry changes or process injections, which lead to the malicious classification. Accessing this through SmartConsole is the standard workflow for investigating specific block incidents and security alerts.
- ✗
Restart the Threat Emulation process using 'cpstop' and 'cpstart'.
Why it's wrong here
Restarting system processes is an invasive troubleshooting step that interrupts production traffic and does not resolve visibility issues. Furthermore, it clears volatile diagnostic data without providing any insight into why the file was blocked, making it an inappropriate response for a standard security investigation into a block action.
- ✗
Check the 'IPS' blade logs to see if the file triggered any signatures.
Why it's wrong here
IPS logs focus on network-level exploits and protocol anomalies, not file-based sandbox results. While a file might trigger both IPS and Emulation, the log specifically identifies 'Emulation block', meaning the core analysis happened in the sandboxing engine, not the signature-based IPS engine, making IPS logs irrelevant for this.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Check Point exam blueprint
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